Adjustable Xbox 360 Rapid Fire Mod Using Arduino Attiny85 The switch on the left controls rapid fire on/off. The knob changes the speed of fire, while switch is on. I also added a led to tell me if the attiny was getting power. Needed: Arduino FTDI cable Attiny85 10uf capacitor 14.8k resistor DPDT switch Potentiometer 2v led Breadboard Protoboard